The roller inductor counter is driven from the crank handle shaft by a pair of Nylon bevel gears. The gear on the counter shaft is held by a setscrew; the gear on the crank handle shaft is a friction fit. Slide the crank handle shaft gear away from the counter shaft gear until they no longer mesh.

Crank the roller inductor until the roller is at the front stop.

Turn the counter shaft until the counter reads all zeros.

Slide the crank handle shaft gear back into mesh with the counter shaft gear.